3D-Printed frequency-scanned slot array in grating waveguide
EntityUAM. Departamento de Tecnología Electrónica y de las Comunicaciones
10.1016/j.aeue.2021.153866International Journal of Electronics and Communications (AEÜ) 138 (2021): 153866
Funded byThis work was supported by the Spanish Government under grant TEC2016-76070-C3-1-R (Agencia Estatal de Investigación, Fondo Europeo de Desarrollo Regional: AEI/FEDER, UE)
ProjectGobierno de España. TEC2016-76070-C3-1-R
SubjectsCorrugated waveguides; Gratings; Layered manufacturing; Linear antenna arrays; Slot antennas; Informática
Rights© 2021 by the authors
Esta obra está bajo una licencia de Creative Commons Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional.
In this work, a linearly-polarized frequency-scanned slot-antenna linear array fed by a travelling wave in grating waveguide is designed at 17 GHz. Additionally, the insertion of periodic gratings in the bottom broad-wall of the feeding waveguide reduces the guided wavelength of the fundamental propagating mode. Therefore, steering angles around broadside can be attained in the radiation pattern, contrary to conventional travelling-wave designs where grating lobes would inevitably appear. Furthermore, tuning posts are included in the radiating element design to mitigate the mismatch provoked by uniform phase feeding. A 16-element array is fabricated to validate the design, which experimentally shows a continuous angular scanning range of ±10°around broadside in the band from 16 to 18 GHz, with a peak gain of 18 dBi and a maximum gain drop of 4 dB
Google Scholar:Garcia-Marin, Eduardo - Masa Campos, José Luis - Sanchez-Olivares, Pablo - Guilarte-Bellod, Beatriz
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